Total Bridges
12,698
Public highway bridges in Louisiana
State profile · Above median Poor share
Louisiana bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Louisiana.
- 12,698
- Public bridges
- 38.7%
- Good condition
- 11.5%
- Poor condition
Louisiana holds 12,698 public highway bridges (#24 of 52 by inventory) with a 11.48% Poor share (#8 of 52 by Poor share).
That is 11.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 45 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
38.7%
4,919 bridges rated 7-9
-11.3pp vs 50% benchmark
Poor Condition
11.5%
1,458 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.5%
Louisiana vs national bridge condition
Louisiana - Good condition share 38.7%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana - Poor-condition share 38.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Louisiana in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Louisiana vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
12,698 24th of 54 higher than 30 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Louisiana
The highlighted point is Louisiana: 12,698 bridges and 11.48% in Poor condition, rank #45 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Louisiana on that same Poor-share ordering:
- North Dakota: 4,255 bridges · 10.98% Poor
- Michigan: 11,371 bridges · 11.27% Poor
- Louisiana: 12,698 bridges · 11.48% Poor
- Pennsylvania: 23,299 bridges · 12.58% Poor
- Guam: 47 bridges · 12.77% Poor
The full national sortable table lives on the rankings page.
Material families in Louisiana
Exclusive FHWA material families across all 12,698 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Louisiana’s inventory
State agency holds 61.0% of the 12,698 public highway bridges filed under Louisiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Louisiana’s bridges were built
Pre-1950 construction accounts for 4.2% of the 12,698 bridges with a recorded original year in Louisiana. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 322 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
ND
North Dakota
10.98% top marginal rate
MI
Michigan
11.27% top marginal rate
LA
Louisiana
11.48% top marginal rate
PA
Pennsylvania
12.58% top marginal rate
GU
Guam
12.77% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Avenue E
PoorOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952 Load: 0.0 t
VALENTINE BRIDGE R
PoorOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969 Load: 0.0 t
UNNAMED RD
PoorOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
UNNAMED RD
PoorOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
Almonaster Ave
PoorOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919 Load: 0.0 t
Beiber Rd
PoorOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 Load: 0.0 t ADT: 70
All Bridges in Louisiana
Carson Rd
GoodOver: SANDY CREEK
1.0 MILES NORTHEAST OF MI, East Baton Rouge, LA
Built 2012 Load: 34.3 t ADT: 115
Woodlake Dr
GoodOver: JONES CREEK
0.4 MILE SOUTH OF S. HARR, East Baton Rouge, LA
Built 2014 Load: 34.3 t ADT: 3,740
Rogers Rd
GoodOver: THOMPSON CREEK
5.2 MILES WEST OF NORWOOD, East Feliciana, LA
Built 2010 Load: 34.3 t ADT: 200
River Rd
GoodOver: COLLINS CREEK
8.4 MI. E. CLINTON, East Feliciana, LA
Built 2003 Load: 34.3 t ADT: 86
US0190
GoodOver: US 190 OVER SERE BAYOU
0.3 M E of LA 1, Pointe Coupee, LA
Built 2006 Load: 34.3 t ADT: 20,176
US0190
GoodOver: US 190 OVER SERE BAYOU
0.29 M E of LA 1 @ US 190, Pointe Coupee, LA
Built 2006 Load: 34.3 t ADT: 20,176
US0190
GoodOver: US 190 OVER TIGER BAYOU
2.2 M E of LA 413, West Baton Rouge, LA
Built 2005 Load: 34.3 t ADT: 22,996
LA0066
GoodOver: CREEK
2.62 MI. N OF LA 968, West Feliciana, LA
Built 2010 Load: 34.3 t ADT: 1,677
Jack Rhodus Rd
GoodOver: CREEK
0.1 MILES WEST OF LA. 441, Livingston, LA
Built 2013 Load: 34.3 t ADT: 4
Cline Rd
GoodOver: CANAL
1.2 MILES WEST OF LA. 16, Livingston, LA
Built 2013 Load: 34.3 t ADT: 10
LA0441
GoodOver: CAT BRANCH
0.4 MI. SO. INTER. 12, Livingston, LA
Built 1998 Load: 34.3 t ADT: 4,270
LA1019
GoodOver: WEST COLYELL CREEK
4.1 M EAST OF JCT. LA 16, Livingston, LA
Built 2000 Load: 34.3 t ADT: 11,852
I10 SW Frontage Rd
GoodOver: CANAL
1 MI. SOUTH OF US 190, St. Tammany, LA
Built 2012 Load: 34.3 t ADT: 200
LA1058
GoodOver: HYDE BRANCH
3.01 MI SOUTH OF LA 10, Tangipahoa, LA
Built 2004 Load: 34.3 t ADT: 899
Laverne crain Rd
GoodOver: JOES BRANCH
0.40 MI S JCT LA 438 & 62, Washington, LA
Built 2001 Load: 34.3 t ADT: 300
Houston Thomas Rd
GoodOver: CRYSTAL CREEK
1.2 M. W. OF HWY 62, Washington, LA
Built 2001 Load: 34.3 t ADT: 410
LA3139
GoodOver: I.C.G. RR
.14 MI SOUTH OF US 61, Jefferson, LA
Built 1977 Load: 34.5 t ADT: 55,872
I0010
GoodOver: OFF RP FROM I-10 EAST
5.4 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 34.5 t ADT: 15,955
LA0652
GoodOver: US 90
LA 652 OVER US 90, Lafourche, LA
Built 1980 Load: 34.5 t ADT: 1,867
US0090
GoodOver: CITY STREETS
0.01 MI W OF BARONNE ST, Orleans, LA
Built 1991 Load: 34.5 t ADT: 7,620
US0090-B
GoodOver: CITY STREETS
1.60 MI SOUTH OF I-10, Orleans, LA
Built 1995 Load: 34.5 t ADT: 7,620
US0090-B
GoodOver: GROUND
1.86 MI SOUTH OF MISS. RI, Orleans, LA
Built 1993 Load: 34.5 t ADT: 7,620
I0510
GoodOver: RR/US 90(CHEF HWY)
.2 MI SOUTH OF US 90, Orleans, LA
Built 1992 Load: 34.5 t ADT: 14,600
I0010
GoodOver: I 10 EAST
.71 MI EAST OF US 90, Orleans, LA
Built 1969 Load: 34.5 t ADT: 7,620
I0310
GoodOver: SWAMP
0.01 M SOUTH OF I-10, St. Charles, LA
Built 1992 Load: 34.5 t ADT: 56,783
I0310
GoodOver: ICG RR YARD RAMPS F & H
5.35 MI S JCT I-10, St. Charles, LA
Built 1980 Load: 34.5 t ADT: 15,642
I0310
GoodOver: I 310 N FROM US 90
0.60 MI N. OF US 90, St. Charles, LA
Built 1986 Load: 34.5 t ADT: 29,468
I0310
GoodOver: S.P. R.R. & LA-631
.50 MI N. OF US 90, St. Charles, LA
Built 1986 Load: 34.5 t ADT: 40,204
I0310
GoodOver: S.P. RR. & LA 631
0.40 MI. N. OF US 90, St. Charles, LA
Built 1986 Load: 34.5 t ADT: 29,468
US0090
GoodOver: LA 20 SP RR DRAIN CANAL
RAMP TO LA 3052, Terrebonne, LA
Built 1994 Load: 34.5 t ADT: 3,007
LA0091
GoodOver: QUEUE DE TORTUE BAYOU
1.5 Mi. North of LA 714, Acadia, LA
Built 1979 Load: 34.5 t ADT: 1,947
I0010
GoodOver: I0049/US0167
6.43 Mi. West of LA 328, Lafayette, LA
Built 1968 Load: 34.5 t ADT: 2,969
I0049
GoodOver: Pont Des Mouton
0.95 MI NORTH OF I-10, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 38,572
I0049
GoodOver: LA 98
2.5 MI N of I-10, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 66,737
I0049
GoodOver: LA 98 [Gloria Switch Rd]
1.92 MI S of LA 726, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 11,728
LA0013
GoodOver: DRAINAGE CANAL
1.81 MI NORTH OF US 190, St. Landry, LA
Built 1978 Load: 34.5 t ADT: 6,481
I0049
GoodOver: LA0093
I-49 OVER LA 93, St. Landry, LA
Built 1978 Load: 34.5 t ADT: 25,609
I0049
GoodOver: E.Grolee St/MPRR
0.2 MI N of US 190, St. Landry, LA
Built 1983 Load: 34.5 t ADT: 14,400
I0049
GoodOver: LA 745 BOEUF BAYOU
11.8 MI SE OF LA 29, St. Landry, LA
Built 1986 Load: 34.5 t ADT: 13,540
4-Mile Bayou Rd
GoodOver: Canal
6.1 Mi. E. of LA 70, St. Martin, LA
Built 2020 Load: 34.5 t ADT: 105
LA0096
GoodOver: CYPRESS BAYOU
1.8 MI W OF US 90, St. Martin, LA
Built 1978 Load: 34.5 t ADT: 6,714
US0090-W
GoodOver: SOUTHERN PACIFIC RAILROA
2.5 MI EAST OF US90, St. Mary, LA
Built 1997 Load: 34.5 t ADT: 12,788
Community Rd
GoodOver: BULL HOLE CANAL
2.0 Mi W of La 82, Vermilion, LA
Built 2012 Load: 34.5 t ADT: 266
US0071
GoodOver: KCS RAILROAD OVERPASS
1.58 MI N OF JCT LA 515, Bossier, LA
Built 2001 Load: 34.5 t ADT: 816
I0020
GoodOver: LINWOOD AVENUE
I-20 OVER I-49 RAMP, Caddo, LA
Built 1993 Load: 34.5 t ADT: 87,567
STONER AVE
GoodOver: I-20 - STONER AVE
.9 MI EAST OF US 80, Caddo, LA
Built 1994 Load: 34.5 t ADT: 54,700
I0049
GoodOver: S CD-RD LNWD AVE&US 79-8
.45 MI NO OF I-49 SBL, Caddo, LA
Built 1993 Load: 34.5 t ADT: 6,360
LA0002-A
GoodOver: REEDER CREEK RELIEF
2.68 MI EAST OF LA 807, Claiborne, LA
Built 2001 Load: 34.5 t ADT: 1,329
LA0002-A
GoodOver: REEDER CREEK
2.83 MI EAST OF LA 807, Claiborne, LA
Built 2001 Load: 34.5 t ADT: 1,329
LA0151
GoodOver: CHOUDRANT CREEK
1.1 MI NORTH OF SOUTH INT, Ouachita, LA
Built 1978 Load: 34.5 t ADT: 2,862
Showing 8,701-8,750 of 12,698 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
What to do with this
Use Louisiana's inventory picture to drill to a county or a specific span.
- Browse counties in Louisiana and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Louisiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.